Edge-trimming machine.



A. s. vosn. EDGE TRIMMING MACHINE.

APPLIUA'I'ION FILED JUNE 3, 1909.

987,656, v Patented Mar. 21, 1911.

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EDGE TRIMMING MACHINE. APPLICATION FILED JUNE3, 190a Patented Mar. 21,1911.

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AMBROSE S. VOSE, OF BROOKLINE, MASSACHUSETTS, ASSIGNOB, BY MESNE ASSIGN-MENTS, T0 ARTHUR F. GRAY AND JAMES M. HALL, TRUSTEES, OF CAMBRIDGE,

MASSACHUSETTS.

EDGE-TRIMMING MACHINE.

Specification of Letters Patent.

Application filed June 3, 1909.

Patented Mar. 21, 1911.

Serial No. 499,895.

To all whom it may concern:

Be it known that I, AMBROSE S. Vosn, a citizen of the United States,residing in Brookline, county of Norfolk, and State of Massachusetts,have invented an Improve ment in Edge-Trimming Machines, of which thefollowing description, in connection with the accompanying drawings, isa specification, like letters on the drawings representing like parts.

This invention relates to machines employing a rotary cutter fortrimming the edges of the soles of boots and shoes, and has for itsobject to provide machines of the class referred to with a feedingdevice for the sole, preferably a rotary feed wheel, which is arrangedto rotate in a plane substantially at right angles to the plane in whichthe rotary cutter is rotated. The rotary feed wheel serves as a bearingfor the tread portion of the sole and effects a positive feed of thesole with relation to the rotary cutter, and also serves as a support onwhich the operator can tilt the sole, so as to present the edge of thesole to the rotary cutter in such manner as to obtain a smooth anduniform trimming of the edge of the sole and avoid irregularities in thesame due to the operator holding the edge of the sole up to the rapidlyrotating cutter with a varying or irregular hand pressure. Provision ismade for rotating the feed wheel at a materially slower speed than thatof the rotary cutter, and also for adjusting the feed wheel withrelation to the rotary cutter so as to compensate for soles of differentthickness. Provision is also made for obtaining different rates of feedfor the soles. These and other features of this invention will bepointed out in the claims at the end i of this specification.

Figure 1 is a front elevation of an edge trimming machine embodying thisinvention. Fig. 2, a side elevation of the machine shown in Fig. 1. Fig.3, a detail in plan to be referred to. Fig. 4, an elevation of the partsshown in Fig. 3, and Fig. 5, an enlarged sectional detail, the sectionbeing taken on the line 55, Fig. 3.

Referring to the drawing, or represents a rotary feed wheel, which isapplied to a sole edge trimming machine, which may be such as shown anddescribed in U. S. Patent No. 858,494L granted July 2, 1907 to Albert E.Ayer and myself, and which comprises essentially a rotary cutter Z) faston a shaft 0 mounted in the head cl of a supporting standard or frame 6,the said cutter having cooperating with it a guard or shield 7", whichis fastened to the shaft 0 by the screw 9, and a bed it for the edge ofthe sole to rest against, which. bed cooperates with the rotary cutterZ) and is supported in a bearing sleeve i, which is radially movablewith relation to the shaft 0 by the yoke 70 attached to the slide blockm, movable in a vertical arm 12. attached to a side bar 0, which ismovable horizontally in guideways in a block 7) attached to the head (Zof the machine. The shaft 0 is driven from a main shaft 10 by a belt 12passed about the pulleys 13, 14:, on said shafts.

The feed wheel a is mounted to revolve in a horizontal plane andsubstantially at right angles to the plane of rotation of the cutter Z),and is fast on a shaft 20 (see Fig. 5) eX tended down through a slidingcarrier or block 21 provided 011 one side with a rib 22 which slides ina guideway on the inner face of'an arm 23 projecting from a block orpiece 24, which is curved at its rear end to conform to the shape of thehead d to which it is detachably secured as by bolts or screws 26. Thecarrier 21 for the feed wheel is secured to the arm 23 to slide there onby the bolt or screw 27 extended through a slot 28 in the said arm, (seeFig. 4). The feed wheel shaft 20 has secured to it below the slide blockor carrier 21, a worm gear 29, which meshes with a worm 30 on a shaft 31extended through and supported by a hearing hub 32 attached to orforming part of the said carrier, and having detachably secured on it asby the pin 33 a pulley 34, which is connected by a belt 35 with the mainshaft 10 having an annular groove 36, which practically forms a smallpulley on said shaft. The worm shaft 31 may be also supported by ahanger arm 40 pivoted to an arm 41 attached to the block 32.

The feed wheel carrier 21 is acted upon by a spring l2 to normallyproject the feed wheel into what may be considered its extreme forwardposition, and against an adj ustable stop 43, shown as a screw whichenters a threaded socket in the arm 23 and has its head projected intothe path of the carrier'2l to be engaged by the latter. Provision ismade for moving the feed wheel carrier in the opposite direction, andfor this purpose, the bearing block or piece 32 for the worm shaft 31 isprovided with a pin 50, which is engaged by fingers 51 on one arm of anelbow lever 52 pivoted at 53 to the supporting piece or block 24 andhaving its other end joined by a link or rod 55 to a foot treadle (notshown).

The feed wheel a may have its periphery milled, serrated or otherwiseroughened. In operation, the feed wheel a is normally positioned withits periphery tangential or substantially so to the plane of rotation tothe outer edge of the knives of the rotary cutter Z), so that, when theshoe to be trimmed has the edge of its sole presented to the rotarycutter, the tread portion of the outer sole bears against the edge ofthe feed wheel, with the result, that the latter in its rotation feedsthe sole forward, and at the same time affords a bearing for steadyingthe shoe, which bearing is in the nature of a pivot, as the sole of theshoe is tangential to the wheel, whereby a superior trimming of the edgeof the sole may be effected by the operator, whose hands are requiredonly to turn the sole on the tangent point of the wheel as a pivot,thereby enabling the operator to more sensitively present the edge ofthe sole to the rotary cutter and obtain a smoother, more uniform andfinished trimmed edge on the sole, which edge is presented to theoperator so as to be seen by him during the trimming operation. hen athicker sole is to be trimmed, the feed wheel carrier may be moved bythe operator depressing the foot treadle (not shown) to which the linkor rod 55 is connected, so as to turn the lever 52 which engages the pin50 and causes the feed wheel carrier 21 to slide back away from theplane of rotation of the rotary cutter, and allow the thicker sole to bepresented to the cutter, and when thus presented the pressure uponthefoot treadle referred to, is removed, and the spring 42 forces thecarrier against the front stop 43, which is adjusted to position thefeed wheel to the rotary cutter with reference to properly trimming thethicker soles. If desired, the feed wheel may be moved back sufficientlyfar to enable the sole to be trimmed by hand alone.

The feed wheel a is driven from the main shaft 10 of the machine, whichis rotated at a substantially high speed, and provision is made forreducing the speed so that the feed wheel is rotated at a comparativelyslow speed, and this result is obtained by belting from the main shaftto the large pulley 34 on the worm shaft 31 and by means of the worm 30and worm gear 29. The pulley 34. is removably attached to the wormshaft, so that pulleys of different sizes may be used to obtaindifferent rates of feed for the shoe.

I have herein shown the rotary feeding device as a wheel having amilled, serrated or roughened surface, but it is not desired to limitthe invention in this respect. So also, I have shown the rotary feedwheel as used on one construction of edge trimming machine employing arotary cutter, but it is not desired to limit the invention to the particular construction of edge trimming machine herein shown.

Claims:

1. A sole edge trimming machine comprising a rotary cutter having asubstantially horizontal axis of rotation, a feeding device arranged tobear on the tread face of a sole whose edge is presented upward to thecutter to enable the operator to watch the progress of the work, meansfor moving said device to impart a feed movement to the sole, and meanswhereby the device may be wholly removed from the plane of travel of thetread face of the sole, whereby the sole may be fed by the feed deviceor by hand.

2. A sole edge trimming machine comprising a rotary cutter having asubstantially horizontal axis of rotation, a feeding 1 device arrangedto bear 011 the tread face of a sole whose edge is presented upward tothe cutter to enable the operator to watch the progress of the work,said feeding device being adapted to yieldingly support the sole, meansfor moving said device to impart a feed movement to the sole, and meansfor retracting the feeding device out of the plane of travel of thetread face of the sole, whereby the sole may be fed by the feed deviceor by hand.

3. A sole edge trimming machine comprising a rotary cutter having asubstantially horizontal axis of rotation, a rotary feed wheel arrangedto bear on the tread face of a sole presented edge upward to the cutterto enable the operator to watch the progress of the work, a movablecarrier having bearings for the shaft of the feed wheel, mechanism forrotating the feed wheel shaft under different adjustments of thecarrier, means for yieldingly holding the carrier in a projectedposition, and means controlled by the operator for retract-ing thecarrier out of the plane of travel of the tread face of the sole,whereby the sole may be fed by the feed wheel or by hand.

t. In a machine of the character described, in combination, a rotarycutter, a rotatable shaft upon which said cutter is mounted to rotatetherewith, a main shaft, means for connecting the cutter shaft with saidmain shaft, a rotatable feed wheel arranged to rot-ate in a planesubstantially at right angles to said cutter shaft, a shaft upon whichsaid feed wheel is mounted, a worm gear on said feed wheel shaft, acarrier for said feed wheel shaft, a worm shaft journaled in saidcarrier and provided with a worm engaging said worm gear, and

means for connecting said worm shaft with I said main shaft to be driventherefrom, substantially as described.

5. In a machine of the character described, in combination, a rotarycutter, a rotatable shaft upon which said cutter is mounted to rotatetherewith, a rotatable feed wheel arranged to rotate in a planesubstantially at right angles to said cutter shaft, a shaft upon whichsaid feed wheel is mounted, a carrier for said feed wheel shaft bodilymovable toward and from the plane of rotation of said rotary cutter, andgear ing carried by said carrier for rotating said feed wheelsubstantially as described.

6. In a machine of the character described, in combination, a rotarycutter, a rotatable shaft upon which said cutter is mounted to rotatetherewith, a rotatable feed wheel arranged to rotate in a planesubstantially at right angles to said cutter shaft, a shaft upon whichsaid feed wheel is mounted, a carrier for said feed wheel shaft bodilymovable toward and from the plane of rotation of said rotary cutter,gear ing carried by said carrier for rotating said feed wheel, a mainshaft, and means connecting said gearing with said main shaft, saidmeans having provision for enabling the rotation of the feed wheel to bevaried, substantially as described.

7. In a machine of the character described, a rotary cutter, a rotatableshaft on which said cutter is mounted to rotate therewith, a rotatablefeed wheel arranged to rotatein a plane substantially at right angles tothe said rotary cutter, a carrier for said feed wheel, a support onwhich said carrier is slidably mounted, an adjustable stop carried bysaid support and cooperating with said carrier to limit its movementtoward the plane of rotation of said cutter, a spring to normally holdsaid carrier against said stop, means to effect bodily movement of saidcarrier away from said stop and against the action of said spring, andmeans to effect rotation of said feed wheel, substantially as described.

In testimony whereof, I have signed my name to this specification in thepresence of Copies of this patent may be obtained for five cents each,by addressing the Commissioner of Patents, Washington, D. C."

